Machine foe jointing staves



JWMJA 499,-

Www/@sf AM. PHOTO-LITRO. C0. NAY. (OSEDRN'S PROC J. G. STEPHENSON, OFBUFFALO, NEV YORK.

MACHINE FOR JOINTING STAVES.

Specification of Letters Patent No. 24,499, dated June 2l, 1859.

To all whom it may concern:

Be it known that I, J oi-IN G. STEPHENSON, of Buffalo, in the county ofErie and State of New York, have invented a new and Improved Machine forJointing Staves; and I do hereby declare that the following is a full,clear, and exact description of the same, reference being had to theaccompanying drawings, forming part of this specification, in whichkFigure l, is a longitudinal vertical section of my invention, taken inthe line m, of Fig. 2. Fig. 2, is a horizontal section of the same,taken in the line y, y, Fig. l. Fig. 8, is a transverse vertical sectionof the same, taken in the line e, e, of Fig. l.

Similar letters of reference denote like parts in all the figures.

This invention relates to a machine for performing the finishingoperation in jointing staves and is designed to perfect the work roughlyperformed by ordinary machines.

The invention consists in the employment or use of yielding planers feedrollers and a pressure plate, arranged for joint operation ashereinafter fully described whereby the desired end is attained.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A, represents a framing which may be constructed in any properway tosupport the working parts of the machine.

B, B, are two shafts placed longitudinally in the framing A, one at eachside of it, and are rotated in the same direction, by a pinion a,gearing into two wheels Z), placed on each shaft B, see Fig. 2.

C, is a driving pulley attached to the aXis of the pinion a. On eachshaft B, at about its center a feed roller D, is placed the peripheriesof which may be corrugated or toothed. On the framing A, and in the sameplane with the feed rollers D, D, a transverse plate or bar E issecured, and F is a screw passing vertically through said bar andthrough two plates c, @,between which strips d, of india-rubber or othersuitable elastic material is placed. Through the plate or bar E, two setscrews G, G, pass the lower ends of which bear on the upper plate c; seeFig. l.

In the upper part of the framing A, there are two horizontal screws H,H, one at each end,y and to the inner ends of these screws plates I, I,are suspended by joints or hinges e; the screws H, may be secured at anydesired point by jam nuts e. The lower ends of the plates I, I, are alsoattached by joints or hinges f, to screws J, J, which are fittedhorizontally in the lower part of the fram* ing and are securedthereinat any desired point by am nuts g. Through each plate I, threescrew rods L, la, L, pass; the said rods having nuts z', at their outerends. Two of these rods k, 71 of each plate are placed one over theother in the same plane, and have a plate K, attached to their outerends. The rods h, L, pass loosely through the plates I, I, and have eacha spiral spring j, fitted on them, all of which are shown in Fig. 1. Theother rods L, are attached to the plates I, I, but disconnected from theplates k; but said rods L have each a spiral spring 7c, fitted on them,said springs bearing against the plates K, see Fig. 2.

In each plate K is fitted a planer or cutter L, and to the face side ofeach plate K, just back of the cutters or planers L, an elastic concaveplate M is attached by screws Z.

The operation is as follows: Motion is given the pulley C by any propermeans and the plates I, I, are adjusted by regulating the screw rods H,J, so that the plates K, K, may be inclined to correspond with the bevelor inclination of the sides of the staves to be jointed, see Fig. l, inwhich a stave N, is shown in red. The plates c, c, are also adjusted byturning the screw F, that the lower plate c, may bear on the uppersurface of the stave. The staves being previously jointed by any of theordinary machinesare fed through my machine by the rollers D, whichrotate in the direction shown by the arrows and the cutters L, take ofta clean unbroken shaving the entire length of each side of the stave;the plate K, yielding in consequence of the springs j, to the curvedform of the sides o-f the staves; and the elastic plates M, serving asguides to the stave while the same is passing between the cutters.

By this invention the sides of the staves may be made perfectly smoothand perfect joints formed. The staves, while passing through themachine, are kept down `upon the rollers by the lower plate c', `'whichis allowed to yield or give to a certain eXtent, to coliform to theinequality of the" stave, in consequence of the elasticity of the stripcl.

The lower screw rods L, are fitted in ob long slots ax, in the plates I,in order that the planers L may be placed in oblique positions as shownin Fig. 3, and thereby enable the planers to act on the sides of thestaves with a drawing cut. This position of the planers or cutters wouldbe preferable, as it insures a smoother cut.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is:

l5 The adjustable plates'I, I, with yielding cutter-stocks or plates K,K, attached in connection with the feed rollers D, D, and yieldingpressure plate c, or its equivalent,

the whole being arranged to operate sub- 20 stantially as and for thepurpose set forth.

JOHN G. STEPHENSON.

Witnesses:

I. I. GoRRIs, W. DoWNIE.

